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Bug 608013 - When plugins receive the set focus event, confirm the parent window has focus before taking it. Fixes a fullscreen focus problem in Silverlight. r=bent.

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This commit is contained in:
Jim Mathies 2011-05-13 12:06:51 -05:00
parent 755b34c5ea
commit 984562c47d
1 changed files with 6 additions and 2 deletions
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8
dom/plugins/ipc/PluginInstanceChild.cpp
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@ -1982,8 +1982,12 @@ PluginInstanceChild::AnswerSetPluginFocus()
PR_LOG(gPluginLog, PR_LOG_DEBUG, ("%s", FULLFUNCTION));
#if defined(OS_WIN)
// Parent is letting us know something set focus to the plugin.
if (::GetFocus() == mPluginWindowHWND)
// Parent is letting us know the dom set focus to the plugin. Note,
// focus can change during transit in certain edge cases, for example
// when a button click brings up a full screen window. Since we send
// this in response to a WM_SETFOCUS event on our parent, the parent
// should have focus when we receive this. If not, ignore the call.
if (::GetFocus() == mPluginWindowHWND || ::GetFocus() != mPluginParentHWND)
return true;
::SetFocus(mPluginWindowHWND);
return true;